Improvement in the manufacture of flexi ble tubing



D. K. HOXSIE & T. L. REED. MANUFACTURE OF FLEXIBLE TUBING.

Patented Nov. 21, 1865.

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UNITED STATES PATENT OFFICE.

DAVID K. HOXSIE AND THOMAS L. REED, OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN THE MANUFACTURE OF FLEXIBLE TUBING.

Specification forming part of Letters Patent No. 5 [,052, dated November21, 1865.

1'0 all whom it may concern:

Be it known that we, DAVID K. HOXSIE and THoMAs L. REED, both ofProvidence, in the county of Providence and State of Rhode Island, haveinvented certain new and useful 1mprovements in Flexible Tubing or Hose,such as is used for conveying illuminating-gas and we do hereby declarethe following is a full, clear, and exact description of the same,reference being hadto the accompanying drawing, making part of thisspecification.

In Letters Patent No. 44,425, and hearing date September 27, A. D. 1864,a description is given of a mode of utilizing and converting animalintestines into an impervious sheath or covering for use in themanufacture of tubing or hose.

The improvement in this case is additional to that described and.claimed in the Letters Patent mentioned, and relates to the employmentof certain means for preserving the intestinal sheath from splitting orcracking, and thereby becoming leaky, from the usage to which it isnecessarily subjected.

' Our invention in this case consists in preserving the intestinein itsnaturally moist condition after it has entered into the composition ofthe tubing or hose by the application thereto of a composition ofglycerine and glue, or any other material 'or compound that will resistevaporation and stiffening from extremes of heat and cold.

Our invention further consists in the use of a composition of glycerineand glue in proper proportions for rendering the braided sheath orcovering which forms part of such tubing or hose impervious, flexible,and smooth on its surface.

Our invention iurther consists in combining upon a suitable spiral-wirecoil. forming a skeleton-tube a number of braided sheaths of cotton orother fibrous material and a number (one or more) of intestinal sheaves,in the order of arrangement, and treated and applied and finished toform a flexible tube or hose, as hereinafter described-that is to say:

The said drawing represents a piece of flexible tubing which is composedof a spiral-wire coil, A, which gives form to the tube and prevents itfrom collapsing by bending it. Over this coil is a covering or sheath,B, of braided cotton, which is saturated or stuffed and coated withenamel-varnish C, (so called) to render shown and described, two or morebeing' drawn one over the other to provide for any damage from thepuncture or otherwise which the lntestines may sustain by the process ofcleaning or otherwise.

The natural condition of the intestines durin g existence of the animalis moist and supple; but after being removed from the animal and treatedwith the chemical solution which is relied on to cure and preserve thestrength and utility of the membrane, and'disposed upon the. tubing inthe manner intended, the intestinesbecome dry and husky, and areliableafter a'ti me to split and crack with being frequently bent and twistedin the way the tubing is used, and after a time the gas will penetrateand escape through the cracks or openings thus formed; and to obviateand efl'ectually prevent this casualty is the object of the presentinvention, which will now be described.

The animal-intestines maybe prevented from cracking and splitting bybeing preserved in a permanently moist and supple condition by means ofa solution of glycerine and glue in equal parts, the glue being firstsoaked and dissolved in the usual way by boiling and afterward addingthe requisite quantity of glyc erine. This compound is applied while itis warm to the intestines with a cloth or brush and rubbed lengthwise onthe tubing vigor ously with the hand. When this compound is intended foruse on the braided covering to render it smooth and impervious, therelative proportions should be about two-fifths glycerine tothree-fifths (a) glue 5 or the latter may be in still greater excess,according to the consistency required by the nature of the fabric.

The enamel-varnish above mentioned as forming a smooth coating orsurface for the re ception of the intestines may be made as fol lows:linseed-oil, twenty (20) gallons; Prussian blue, six (6) pounds. Boiltogether until the compound is of suitable consistency-say that ofmolasseswhen withdraw it from the fire, and when it isnearly cool, itbeing allowed to cool gradually, add and stir in thoroughly abouttwo-thirds the quantity of naphtha. Great care should be taken in addingthe naphtha that the vessel is suiiiciently removed from the vicinity ofthe fire, and as well that the boiled compound has so i'ar cooled as notto ignite the naphtha, frequent and terrible accidents resulting fromthese causes when care is not observed.

A superior article of impervious flexible tubing may be manufacturedfrom the foregoing materials combined and prepared as follows, namely:first, a lengthened coil of tiuned-iron wire; second, a covering ofcotton braid thereon third, a stutfing and coating of enamel-varnish,allowed to dry thoroughly in the open air,

if possible,-otherwise in an oven; fourth,a coating of glycerine andglue, equal parts of each,

, allowed to set or dry, after which asecond coating may be applied;fifth, three intestines, drawn one over the other; sixth, a coating ofg] yeerine and glue, equal parts of each; seventh, three intestines, oneover the other; eighth, a coating of glycerine and glue, equal parts ofeach; ninth, a covering of cotton braid tenth, a coating of glycerineand glue, two-fifths glycerine to three-fifths glue; eleventh, acoatingof glycerine and glue, one-fifth glycerine to'four-fifths glue;twelfth, a coating of shellac varnish, (or this may beomitterh)thirteenth,

'a covering of coloredvvorsted, silk, or cotton braiding for outsidefinish,or cotton stufl'ed with oil (linseed) and varnished.

Instead of the enamel-varnish,.'a coating oi glycerine and glue,.thelatter being in excess, may be employed on the braid2to form a smoothand even surfacefor the intestinal sheath.

The use of the processes and materials herein described is alsocontemplated for preserv ing and utilizing other animal-tissues of asimilar nature to intestines, the bladder, 850., for kindred usefulpurposes, and the same is herein also claimed. 1

Having described our invention, what We claim, and desire to secure byLetters Patent,

1. Preserving animal-intestines and like animal tissues in their naturalmoist condition by means of a compound of glycerine and glue or othermaterial or compound that will remain unaffected by extremes oftemperature, as described. I

2. The use of a compound of 'glycerine and glue in the requisiteproportions, in combination with a covering of fibrous material, as andfor the purpose described.

3. The tubing constructed wholly or in part of the materials combined inthe manner for the several purposes herein set forth and described.

4. The enamel-varnish compound, substan-

